STUDI PEMANFAATAN CAMPURAN MATERIAL WASTE PADA PRODUKSI BENANG POLYESTER: PERBANDINGAN BLEND RATIO TERHADAP KUALITAS

Textile industry is a big industrial sector which produces wastes in its processes, including the initial process of textile, the yarn spinning manufacturing. Yarn spinning process converts raw material of fibers into yarn, it also produces waste in each stage of the production. Waste generated from the blowing to winding process has various characteristics and properties. This study aims to identify waste generated in the polyester yarn spinning process and make a categorization of waste, based on the characteristics of waste: whether it can be reused or cannot be reused (called Unused). Waste sorting process parameters are also determined to be able to produce waste material that is ready to be reused for the yarn production. The mixing of waste material and original non-waste material is then used for production with 3 combinations of blend ratio, showing the percentage of waste content in each material mixing. After the mixing process, material is manufactured to produce finished yarn. Yarn quality testing is performed to test the effect of waste material mixtures on the yarn quality itself. The quality parameters involved are yarn unevenness, neps and trash contents. The test results show that the results of the material mixture for the 3 type of blend ratio meet the company’s quality standards. To conclude, it is as expected that the lower the waste percentage, the higher the yarn quality. However, in order to optimize waste usage, as high as 3.2% waste still can be utilized while maintaining the yarn quality standards.